Abstract

The theory for two-wave mixing in a photorefractive material with an external electric field and a moving grating is developed. Large gain enhancements are predicted for grating periods of 10–100 μm and compared with recent observations in Bi12SiO20. Predictions are made for enhancements in GaAs, which has recently been found to be photorefractive in the near infrared.

© 1984 Optical Society of America

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